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Components of Carrying Value of Residential Available for Sale Securities in Unrealized Loss Position (Detail) (Residential, USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
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Residential |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Less Than 12 Consecutive Months Amortized Cost | $ 300,804 | $ 607,030
Less Than 12 Consecutive Months Gross Unrealized Losses | (2,691) | (21,195)
Less Than 12 Consecutive Months Fair Value | 298,113 | 585,835
12 Consecutive Months or Longer Amortized Cost | 122,012 | 19,828
12 Consecutive Months or Longer Gross Unrealized Losses | (4,478) | (1,938)
12 Consecutive Months or Longer Fair Value | $ 117,534 | $ 17,890

X
- Definition Amount of accumulated pre-tax unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer impacting investments. + References No definition available. + Details
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- Definition Amount of accumulated pre-tax unrealized loss on investments in available-for-sale securities that have been in a loss position for less than twelve months impacting investments. + References No definition available. + Details
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- Definition This item represents the amortized cost basis of securities that have been in a loss position for less than twelve months for those securities which are categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
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- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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